基于MES的电-气综合能源系统鲁棒状态估计方法  

A Robust State Estimation Method of Electricity-Gas Integrated Energy System Based on MES

作　　者：雷常鼎 吴文海 肖博文 马恒瑞 LEI Changding;WU Wenhai;XIAO Bowen;MA Hengrui(School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,Hubei,China;State Grid Ankang Hydropower Station,Ankang 725000,Shaanxi,China;State Grid Hubei Jingmen Power Supply Company,Jingmen 448000,Hubei,China;New Energy(Photovoltaic)Industry Research Center,Qinghai University,Xining 810016,Qinghai,China)

机构地区：[1]湖北工业大学电气与电子工程学院,湖北武汉430068 [2]国网安康水力发电厂,陕西安康725000 [3]国网湖北省电力有限公司荆门供电公司,湖北荆门448000 [4]青海大学新能源(光伏)产业研究中心,青海西宁810016

出　　处：《电网与清洁能源》2022年第9期143-150,共8页Power System and Clean Energy

基　　金：国家自然科学基金资助项目(51907096)。

摘　　要：随着综合能源系统的快速发展,电-气耦合互联系统成为能源互联网体系中的一种典型形式。为保证电-气互联网络安全高效运行,提高智慧能源系统的监控状态感知能力和坏数据防御能力,该文参照电网状态估计方法,分别对电网、气网和耦合元件建立稳态模型。用电网节点电压模值与相角、气网节点压力平方作为状态量,基于最大指数平方法(maximum exponential square,MES),并考虑电网和气网零注入约束以及边界等式约束,建立了电-气耦合网络的MES状态估计模型,并对电-气耦合网络进行全局统一协调状态估计。基于一个4电网节点-12气网节点耦合系统进行仿真,仿真结果证明了该文所提方法可实现电-气耦合网络运行状态的准确感知,并在此基础上获得电-气耦合网络全局一致解,同时在两者耦合边界还可利用耦合关系,对边界坏数据实现有效辨识。With the rapid development of the integrated energy system,the electricity-gas coupling interconnection system has become a typical form of the energy Internet system.In order to ensure the safe and efficient operation of the electricity-gas interconnected network and improve the monitoring status awareness and bad data defense capabilities of the smart energy system,this paper refers to the grid state estimation method and separately analyzes the power grid and the gas grid.Using voltage modulus and phase angle of grid nodes and pressure square of gas network nodes as state quantities,based on the maximum exponential square(MES)method,and considering zero injection constraint and boundary equality constraint of the grid and gas network,the MES state estimation model of electricity-gas coupling network is established and the global unified coordination state of the electricity-gas coupling network is estimated.The simulation is based on a 4 grid node-12 gas grid node coupling system.The simulation results prove that the method proposed in this paper can realize the accurate perception of the operation status of the electricity-gas coupling network,and on this basis,the global consistent solution of the electricity-gas coupling network is obtained.At the same time,the coupling relationship can also be used at the coupling boundary of the two to realize effective identification of bad data on the boundary.

关 键 词：电气综合能源系统 状态估计 最大指数平方法 坏数据防御 

分 类 号：TM73[电气工程—电力系统及自动化]